50985

Appears in sequences

• Expansion of 1/(1 - x^2 - 2 x^3 + x^4).at n=36A122512
• a(n) = (n + 1)*(n^2 + 2)*(n^3 + 3)/6.at n=8A131509
• Array read by antidiagonals: A(n,k) is the number of T_0 n-regular set multipartitions (multisets of sets) on a k-set.at n=61A331126
• Irregular table read by rows: Take a nonagon with all diagonals drawn, as in A332421. Then T(n,k) = number of k-sided polygons in that figure for k >= 3.at n=27A332427
• Number of reversed integer partitions of 2n whose half-alternating sum is 0.at n=29A357639
• a(n), read backwards, is present as a substring in a(n) + a(n+1). This is the lexicographically earliest sequence of distinct terms > 0 with this property.at n=46A360947