23885

Appears in sequences

• Expansion of (1-x)/(1 - x - 2*x^3 + x^4).at n=26A052916
• Numbers k such that the k-th triangular number contains only digits {2,5,8}.at n=9A119169
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, -1, 1), (-1, 0, 1), (1, 0, 1), (1, 1, -1)}.at n=9A148903
• Positive numbers y such that y^2 is of the form x^2+(x+881)^2 with integer x.at n=6A159690
• Number of 4-element subsets of [n] having a prime element sum.at n=38A320679