42324

Appears in sequences

• a(n) is the sum of squares of the first n positive integers congruent to 2 mod 3.at n=23A024394
• Palindromic in bases 9 and 10.at n=19A029965
• Number of binary codes (not necessarily linear) of length n with 4 words.at n=19A034199
• Dirichlet convolution of Bell numbers with themselves.at n=9A034770
• Number of primes in the reduced residue system of n-th primorial number (=A002110(n)).at n=7A048862
• a(n) = T(n) concatenated with reverse(T(n)) divided by 11, where T(n) is the n-th triangular number.at n=30A084008
• Number of 3Xn 0..1 arrays with every element equal to 0, 2, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=12A302461