a[1] = 1; a[2] = 1; a[3] = 1; a[4] = 1; a[5] = 1; a[6] = 1; for n >= 7, a[n] = 6*a[n - 1] - 5*a[n - 2] - 4*a[n - 3] - 3*a[ n - 4] + 2*a[n - 5] + a[n - 6]; then take absolute values.
A108142
a[1] = 1; a[2] = 1; a[3] = 1; a[4] = 1; a[5] = 1; a[6] = 1; for n >= 7, a[n] = 6*a[n - 1] - 5*a[n - 2] - 4*a[n - 3] - 3*a[ n - 4] + 2*a[n - 5] + a[n - 6]; then take absolute values.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =3a(7) =27a(8) =151a(9) =759a(10) =3679a(11) =17599a(12) =83767a(13) =397943a(14) =1889059a(15) =8964891a(16) =42539855a(17) =201849743a(18) =957752095a(19) =4544385823a(20) =21562354767a(21) =102309686479a(22) =485441784803
External references
- oeis: A108142