132672domain: NAppears in sequencesThe number of order-decreasing partial isometries (of an n-chain).at n=16A184052Any number greater than a(n) can conjecturally be represented in more ways by sums of three base-10 palindromes than a(n).at n=33A262526Expansion of e.g.f. z*(2*(exp(z) + 1)/(cosh(z) + cos(z)) - 1).at n=12A281588