38728
domain: N
Appears in sequences
- a(n) = 1 + n*(n+1)*(n^2-n+12)/12.at n=26A136396
- Number of binary strings of length n with equal numbers of 0001 and 1010 substrings.at n=17A164163
- Position where 10^n-1 occurs in the Kaprekar sequence A006886.at n=42A193992
- p-INVERT of (1,1,1,1,1,...), where p(S) = 1 - S - S^2 - S^3.at n=10A291000
- a(n) is the number of unlabeled rank-3 graded lattices with 4 coatoms and n atoms.at n=38A322599