21389

Appears in sequences

• Expansion of 1/(1-x^3-x^4-x^5-x^6-x^7-x^8-x^9-x^10).at n=31A017823
• Base-8 palindromes that start with 5.at n=32A043025
• Numbers of the form prime(n)*(prime(n)-1)/4.at n=28A171555
• Numbers n such that A229964(n) = 3.at n=23A229966
• a(n) = one-half of the number of cells in the central rectangle of the graph described in row 2n+1 of A333288.at n=25A337640
• Records in A353717.at n=25A353722
• Number of integer partitions of n with some part that can be written as a nonnegative linear combination of the other distinct parts.at n=37A365068