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PLANE FIGURATE NUMBERS
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100 REM PROJECT abundant numbers additive digital root amicable numbers array of dots baselike numbers beprisque numbers bers chain Challenge Cl unitary number consecutive numbers cubic numbers deficient numbers difference digital root number emirps Example Exercise Example Find extend the table figurate numbers Find the sum formula Goldbach's conjecture happy number hexagonal number largest number least number lucky numbers Mersenne prime multiply perfect number greater number of terms NUMBERS Definition numbers is unlimited numbers less odd integers odd numbers palindromic numbers palindromic primes Pascal's triangle pattern pentagonal number perfect number positive integer practical number prime circle prime factors prime number primitive semiperfect problem Project 11 proper divisors Pythagorean triple rectangular number repunit semiperfect numbers semiprimes sequence sociable numbers square number square pyramidal square pyramidal number sum of consecutive sum of three tetragonal numbers tetrahedral number three-digit numbers triangle inequality numbers triangular numbers tribonacci Ulam number Write