78021

Appears in sequences

• G.f. is the polynomial (1-x^3) * (1-x^6) * (1-x^9) * (1-x^12) * (1-x^15) * (1-x^18) * (1-x^21) * (1-x^24) / (1-x)^8.at n=14A162596
• Number of n X 3 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 1 neighboring 1.at n=9A296315
• The smallest deficient number that begins a run of at least n consecutive deficient numbers with the same number of prime factors (counted with multiplicity).at n=7A377353