40502

Appears in sequences

• Numbers k such that k*2^k + (k+1) is prime.at n=11A046845
• Numbers k such that k concatenated with itself gives the product of two numbers which differ by 9.at n=10A116162
• Numbers k such that k concatenated with k+8 gives the product of two numbers which differ by 7.at n=7A116215
• E.g.f. satisfies A(x) = sinh(x + A(x)^2).at n=5A143137
• Number of compositions of n into distinct parts where each part i is marked with a word of length i over a denary alphabet whose letters appear in alphabetical order.at n=5A261848
• Number of minimum sized maximal subsets of {1..n} such that every pair of distinct elements has a different difference.at n=47A382396