197778

Appears in sequences

• a(n) = T(n, n-3), T given by A026552. Also a(n) = number of integer strings s(0), ..., s(n) counted by T, such that s(n) = 3.at n=13A026556
• Numbers k such that 93*2^k+1 is prime.at n=43A032396
• Numbers k such that (4*10^k + 173)/3 is prime.at n=29A280848
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-1) + b(n-2) - 3*b(n-3), where a(0) = 1, a(1) = 3, a(2) = 5, b(0) = 2, b(1) = 4, b(2) = 6, and (a(n)) and (b(n)) are increasing complementary sequences.at n=24A295360
• Numbers that are the sum of four fourth powers in three or more ways.at n=24A344241
• Numbers that are the sum of four fourth powers in exactly three ways.at n=24A344242