57007

Appears in sequences

• Number of permutations of length n which avoid the patterns 1234, 1324, 3421.at n=13A116829
• Decimal number representations of hexadecimal numbers whose form spells an American-English word found in a standard dictionary in numerical order.at n=35A132676
• Expansion of Sum_{i = p*q, p prime, q prime} x^i/(1 - x^i) / Product_{j>=1} (1 - x^j).at n=38A281612
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + 2*b(n-1) + 2*b(n-2), where a(0) = 1, a(1) = 2, b(0) = 3, and (a(n)) and (b(n)) are increasing complementary sequences.at n=17A294560