72152

Appears in sequences

• Iccanobirt numbers (12 of 15): a(n) = R(R(a(n-1)) + a(n-2) + a(n-3)), where R is the digit reversal function A004086.at n=17A102122
• 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=38A337640
• G.f. satisfies A(x) = exp( Sum_{k>=1} A(x^k) * x^k/(k * (1 + 2*x^k)) ).at n=25A363580