43460

Appears in sequences

• Hexagonal pyramidal numbers, or greengrocer's numbers.at n=40A002412
• Even hexagonal pyramidal numbers.at n=19A015226
• a(n) = (2*n - 1)*(7*n^2 - 7*n + 6)/6.at n=26A063490
• Define a(1)=1. Thereafter a(n) is the smallest positive integer with the property that a(n)^2 cannot be created by summing the squares of at most n values chosen among the previous terms (with repeats allowed).at n=20A111302