285458

Appears in sequences

• The number of meandering curves of order n, with only one extremity covered by its arcs.at n=13A217310
• Number of foldings of n labeled stamps in which leaf 1 is inwards and leaf n outwards (or leaf 1 outwards and leaf n inwards).at n=13A223093
• Numbers k such that [prime(k), prime(k+1), prime(k+2), prime(k+3)] == [1, 2, 3, 4] (mod 11).at n=25A302772