A036373 -id:A036373 - cp's OEIS frontend

A036420 Number of ternary rooted trees with n nodes and height exactly 5.

0, 0, 0, 0, 0, 1, 4, 13, 32, 74, 155, 316, 612, 1160, 2126, 3829, 6737, 11672, 19856, 33332, 55112, 90014, 145105, 231200, 363985, 566692, 872274, 1328167, 2000224, 2980316, 4393106, 6407555, 9246741, 13204470, 18657868, 26088224, 36095090

Offset: 0

N. J. A. Sloane, Eric Rains (rains(AT)caltech.edu)

Sean A. Irvine, Table of n, a(n) for n = 0..121
A. T. Balaban, J. W. Kennedy and L. V. Quintas, The number of alkanes having n carbons and a longest chain of length d, J. Chem. Education, 65 (1988), 304-313.
Index entries for sequences related to rooted trees

Cf. A036370, A036437.

a(n) = A036373(n) - A036372(n). - Sean A. Irvine, Oct 31 2020

A036421 Number of ternary rooted trees with n nodes and height exactly 6.

Original entry on oeis.org

0, 0, 0, 0, 0, 0, 1, 5, 19, 56, 151, 374, 889, 2032, 4529, 9858, 21075, 44320, 91928, 188288, 381392, 764683, 1519026, 2991601, 5844950, 11334761, 21827329, 41755112, 79376196, 149991258, 281805933, 526546799, 978614867, 1809450608

Offset: 0

N. J. A. Sloane, Eric Rains (rains(AT)caltech.edu)

Sean A. Irvine, Table of n, a(n) for n = 0..364
Index entries for sequences related to rooted trees

Cf. A036370, A036437.

a(n) = A036374(n) - A036373(n). - Sean A. Irvine, Oct 31 2020

cp's OEIS Frontend

A036420 Number of ternary rooted trees with n nodes and height exactly 5.

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