23444

Appears in sequences

• Number of partitions of n with equal number of parts congruent to each of 0 and 2 (mod 3).at n=50A035535
• 0-sequence of reduction of pentagonal numbers sequence by x^2 -> x+1.at n=11A192145
• For n > 1 the sum of t := floor(n/2) + 1 consecutive previous terms, the leading t terms when n is even, the immediately-preceding t terms when n is odd; a(0) = 0, a(1) = 1.at n=27A238834
• a(0) = 1; a(n) = Sum_{k=1..n} Stirling2(n,k)*a(n-k).at n=7A308444
• Number of 12-regular partitions of n (no part is a multiple of 12).at n=38A328546
• Integers which can be written in exactly three ways as sum of two distinct nonzero pentagonal numbers.at n=28A333013