a(n) = Sum_{m=0..n} 3^v3(m!), where v3(m!) is the exponent of the highest power of 3 dividing n!, expressed in base 3.
A294493
a(n) = Sum_{m=0..n} 3^v3(m!), where v3(m!) is the exponent of the highest power of 3 dividing n!, expressed in base 3.
Terms
- a(0) =1a(1) =2a(2) =10a(3) =20a(4) =100a(5) =110a(6) =210a(7) =1010a(8) =1110a(9) =11110a(10) =21110a(11) =101110a(12) =201110a(13) =1001110a(14) =1101110a(15) =2101110a(16) =10101110a(17) =11101110a(18) =111101110a(19) =211101110a(20) =1011101110a(21) =2011101110a(22) =10011101110a(23) =11011101110a(24) =21011101110a(25) =101011101110a(26) =111011101110
External references
- oeis: A294493