22142

Appears in sequences

• Number of stacks, or arrangements of n pennies in contiguous rows, each touching 2 in row below.at n=34A001524
• Numbers having four 3's in base 9.at n=14A043468
• Number of fullerenes with 2n vertices (or carbon atoms), counting enantiomorphic pairs as distinct.at n=26A057210
• a(0)=2, a(n) = n^2+a(n-1).at n=40A153056
• a(n) = A056520(n)+1 for n>0, a(0)=1.at n=40A179904
• Number of partitions of 3n in which every part is <=n.at n=12A209818
• Number of compositions of n with all adjacent parts (x, y) satisfying x > 2y or y = 2x.at n=62A342336
• Product_{n>=1} (1 + x^n)^(a(n)/n!) = 1 - log(1 - x).at n=7A352664
• a(n) = least positive integer m such that m*(m+1) has n-2 distinct digits in base n, all distinct from those (base-n digits) of m and m+1.at n=7A381248