778240

Appears in sequences

• a(1) = 4; a(n) = smallest composite number greater than the sum of all previous terms.at n=18A070232
• Number of plane binary trees of size n+2 and height n.at n=14A073773
• Determinant of n X n matrix of first n^2 terms of Euler totient function phi (A000010).at n=7A119508
• Expansion of 1/(8*x^5+8*x^4-8*x^3-4*x^2+1).at n=17A123959
• Triangle of coefficients of a polynomial sequence related to the coloring of labeled graphs.at n=25A219765
• Nonprime Heinz numbers of integer partitions whose product is equal to their sum.at n=26A301988
• (1/8) times the sum of the elements of all subsets of [n] whose sum is divisible by eight.at n=19A309300
• Triangle T(n,k) read by rows in which n-th row lists in increasing order all multiplicative partitions mu of n whose sum is also n (with factors >= 1), encoded as Product_{j in mu} prime(j); n>=1, 1<=k<=A001055(n).at n=48A377852