A363488 Even numbers whose prime factorization has at least as many 2's as non-2's.
2, 4, 6, 8, 10, 12, 14, 16, 20, 22, 24, 26, 28, 32, 34, 36, 38, 40, 44, 46, 48, 52, 56, 58, 60, 62, 64, 68, 72, 74, 76, 80, 82, 84, 86, 88, 92, 94, 96, 100, 104, 106, 112, 116, 118, 120, 122, 124, 128, 132, 134, 136, 140, 142, 144, 146, 148, 152, 156, 158, 160
Offset: 1
Keywords
Examples
The terms together with their prime indices begin: 2: {1} 34: {1,7} 72: {1,1,1,2,2} 4: {1,1} 36: {1,1,2,2} 74: {1,12} 6: {1,2} 38: {1,8} 76: {1,1,8} 8: {1,1,1} 40: {1,1,1,3} 80: {1,1,1,1,3} 10: {1,3} 44: {1,1,5} 82: {1,13} 12: {1,1,2} 46: {1,9} 84: {1,1,2,4} 14: {1,4} 48: {1,1,1,1,2} 86: {1,14} 16: {1,1,1,1} 52: {1,1,6} 88: {1,1,1,5} 20: {1,1,3} 56: {1,1,1,4} 92: {1,1,9} 22: {1,5} 58: {1,10} 94: {1,15} 24: {1,1,1,2} 60: {1,1,2,3} 96: {1,1,1,1,1,2} 26: {1,6} 62: {1,11} 100: {1,1,3,3} 28: {1,1,4} 64: {1,1,1,1,1,1} 104: {1,1,1,6} 32: {1,1,1,1,1} 68: {1,1,7} 106: {1,16}
Crossrefs
Programs
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Mathematica
Select[Range[100],EvenQ[#]&&PrimeOmega[#]<=2*FactorInteger[#][[1,2]]&]
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